Routing-machine.



A. G OSMER. ROUTING MACHINE.

APPLICATION FILED JAN. 20, 1912.

1,027,063. Patented May 21,1912.

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ALFRED G. OSMER, OF LINCOLN, NEBRASKA.

ROUTING-MACHINE.

Specification of Letters Patent.

Patented May 21, 1912.

Application filed January 20, 1912. Serial No. 672,406.

To all whom it may concern:

Be it known that I, ALFRED G. OSMER, of the city of Lincoln, county ofLancaster, and State of Nebraska, have invented certain new and usefulImprovements in Routing-Machines, which improvements are described inthe following specification and are illustrated by the accompanyingdrawlngs.

The invention relates to dadoing and routing machines of that class inwhich a powerdriven rotary cutter is mounted on a carriage traveling ona pivoted horizontal track supported over a work table.

It is the object of the invention to facilitate the transmission ofpower from the driving pulley of such a machine to the cutter somounted; to render that transmission positive and uniform in allpositions of the carriage relatively to the pulley and to the work aswell as in all positions of the cutter relatively to the carriage; tofacilitate making slight angular adjustments of the pivoted track, inaddition to its extensive adjustments of that kind, for the purpose ofcutting grooves of varying or tapering width, as in stair stringers andthe like; to dispense with all use of belting between the driving pulleyand the cutter; to render smooth and free from raggedness the sides ofthe grooves or channels produced by the cutter; and in general toproduce a superior machine of the specified class. To this end I mountthe pivoted track for the carriage of the machine upon a jib, or pivotedarm, extended radially over the work table; connect the driving pulley,mounted on the pivotal end of the carriage track, with the cutter bygearing that comprises an angular shaft teetering and sliding lengthwisein an axial hole through the pulley; and mount the cutterhead upon ahorizontal axis.

The best manner in which I have contemplated applying the principles ofthe invention, is shown in said drawings; yet the invention itself isnot restricted to any specific arrangement or construction of parts,

excepting such limitations of that kind as are either expressed ornecessarily implied in the subjoined claims.

In these drawings the Figures 1 and 2 are respectively a side elevationand a plan of a routing machine constructed in accordance with theseprinclples and including a stair stringer in position for routingtherein.

Fig. 3 is an axial section of the driving pulley. Fig. 4 is a horizontalsection of the carriage etc. on the section line a-a of Fig. 1. Fig. 5is a vertical cross section on the section line b--?) of Fig. 1. Fig. 6is a horizontal section of the carriage and its contents on the axialline of the cutterhead. Fig. 7 is a detail in perspective. Fig. 8 is avertical section on the section line dd of Fig. 2.

In this illustrative machine the numeral 1 denotes a stationarysemicircular work table having a marginal graduated scale 2, atransverse stop board 3 against which the work is to be held edge toedge on that table, and gages 4 adjustable 011 the stop board. At thegeometric center of this semicircular table is fixed the vertical pivotbolt 5, on which are terminally pivoted both the horizontal jib 6 andthe carriage track 7. This jib is a rigid quadrangular frame, comprisingthe two approximately parallel side bars 8 and the crosspieces 9, 10 and11, located respectively at the inner or pivotal end of the jib, at theouter descending portion 12 of the jib, and at the returning end 13 ofthe same under the table. The pivoted carriage track 7 is a rigidrectangular frame,

similarly comprising two parallel side rails 14, which are of uniformcross section, and two terminal crosspieces 15 and 16; the crosspiece 15at the inner end of the track being perforated to accommodate thevertical bolt 5, and the crosspiece 16 at the outer end of the trackoverlapping the jib crosspiece 10, and being adapted to slide thereon asthe track is swung from side to side of the jib. The jib 6 and the track7 are flexibly joined together by the pivot bolt 5, working in avertically sleeved portion 17 of the crosspiece 9, and by the hinge pin18, seated in the dependent ends of the crosspiece 15 and working in thehorizontally sleeved portion 19 of the same crosspiece 9. For thepurpose of swinging the track on the jib, the handles 16 are mounted onthe carriage. For the purpose of holding the track in fixed positions ofangular adjustment on the jib, a wedge 20, working through a slot in thecrosspiece 16, is operated by the pivoted hand-lever 21, turning on thepivot pin 22, and fastened to the wedge by the pivot pin 22, to engageand to disengage the crosspiece 10 of the jib as may be required. Tofacilitate the angular adjustment of the jib on the work table,

a pointer 22 carried on the outer end of the jib, travels over thegraduated scale 2.

The carriage of the machine comprises a pair of standards, or verticalside pieces, 25, which are united at the top by the horizontalcross-plate 26 and at the bottom by the cross bolt 28, and are providedwith the supporting lugs 27 perforated to contain and slide on the trackrails 14. Between the side pieces 25, and vertically movable in parallelgrooves therein, is seated a slide 30, which is shown separately in Fig.7. This slide comprises two vertical bars 31 united at the top by ahorizontal crossplate 32, and is adjustable vertically in the carriageby the thumbscrew 33 working in the screwhole 34 and in an aliningscrewhole in the cross plate 26. In this slide are fixed two horizontalshafts, namely, the gearing shaft 35 and the cutter shaft 36. On shaft35 is placed the sleeve 37 carrying the bevel gear 38 and the spur gear39, revolving in unison; and on shaft 36 is placed a sleeve 40 carryingboth the spur gear 41, which meshes with the gear 39, and also therotary cutter head 42. The double-flanged pulley 43, having the hubs 44and journaled thereby in the vertical bearing pieces 45 on the top ofthe crosspiece 15, has a horizontal axial perforation 46, square incross section and increasing uniformly in size from the middle to eachend, as shown in Fig. 3. The square rod 47 carrying the terminal bevelgear 48 meshing with the gear 38, slides longitudinally in this aperture46 as the carriage slides on the track rails 14, and also accommodatesitself to the vertical adjustment of the gear 38 effected by theadjustment of the slide 30 by the thumbscrew 33. To fasten the free endof the jib to the table in working positions of angular adjustment, themargin of the table is clamped between the traveler 51 on the end of thesetscrew 51, working in the crosspiece 11, and the supporting feet 49which are vertically adjustable on the jib rails 8 by the thumbscrews50.

To limit the inward, or centripetal travel,

7 of the carriage on the track rails 14, and

thereby to stop at a uniform predetermined point in a piece of work 24the cut-ting of the successive parallel grooves 52 or 53, a

' sliding sleeve stop 54 is placed on one of the rails 14 in the path ofone of the lugs 27, and-is adjusted on that rail by the set screw 55from time to time as the differing work may require. To indicate inadvance to the eye of the operator, looking down on the work from above,the exact location of the extreme secondary or widening cuts which maybe positioned in the work by the angular adjustment of the track on thejib,

two straigat guides 56 are bolted to the side rails 8 in positionsregistering respectively with the margins of those cuts. By

reason of its pivotal position the pulley 43 is conveniently driven byan overhead pulley, not shown in the drawings, and by a connecting belt,without the aid of any device for taking up slack of the latter.

In the operation of the machine, the work is clamped or otherwisefastened on the work table and against the stop board, in the positionindicated, by any suitable means, not shown in the drawings, and in thatposition is adjusted endwise with reference to the gages 4 for cuttingthe parallel grooves in succession. By a first cutting these grooves aremade severally of a uni form width, dependent on the length of thecutterhead; and by a second cutting are widened and tapered at an angledependent upon the angular adjustment of the track on the jib. Thecutters are raised into an accessible position, as often as desired, bytilting the track 7 through a considerable angle on its pivot 18', andcutter heads of different dimensions may be substituted for each otheron the shaft 36, as the Work may render desirable.

I claim as my invention:

1. A routing machine, comprising a work table, a jib pivoted thereto toswing horizontally over the table, a track similarly pivoted to the jib,a carriage traveling on the track, a rotary cutter head supported by thecarriage, and means for driving the cutterhead.

2. A routing machine, comprising a work table, a jib pivoted thereto toswing horizontally over the table, a track similarly pivoted to the jib,a carriage movable on the track, a pulley mounted on the track, a shaftsliding in the pulley, gearing mounted in the carriage and driven by theshaft, and a rotary cutterhead driven by the gearing.

3. A machine of the specified class, comprising a work table, a carriagetrack, and a jib supporting the track; the jib being pivoted to swinglaterally over the table, and the track being hinged to oscillate bothlaterally and vertically on the jib, in combination with means forfastening the jib rigidly to the table and to the track.

4. A routing machine, comprising'a work table having a graduated scale,a pivoted jib swinging horizontally over the table and carrying apointer along the graduated pulley mounted on the track, gearing mountedin the carriage, a driving connection between the pulley and thegearing, and a cutter driven by the gearing.

6. A routing machine, comprising a work table, a jib pivoted to swinghorizontally over the table, a track pivoted to oscillate sidewise onthe jib and to oscillate up and down thereon, a carriage movable on thetrack, a pulley mounted on the track, gearing mounted in the carriage, adriving connection between the gearing and the pulley, and a cutterdriven by the gearing.

7. A routing machine, comprising a work table, a jib pivoted to swinghorizontally over the table, a track pivoted to oscillate bothvertically and sidewise on the jib, a carriage reciprocable on thetrack, a pulley mounted on the track, gearing mounted in the carriage, adriving connection from the pulley to the gearing, and a rotary cutterdriven by the gearing.

8. A routing machine, comprising a work table, a jib pivoted thereto toswing horizontally over the table, a track carried by the jib andpivoted to oscillate horizontally thereon, a carriage movable 011 thetrack, a slide in the carriage, means for moving the slide up and downin the carriage, gearing mounted in the slide, a cutter driven by thegearing, a driving pulley mounted on the jib, and a driving connectionbetween the pulley and the gearing.

9. A routing machine, comprising a work table, a jib pivoted to swinghorizontally thereon, a track pivoted to the jib to oscillate bothvertically and horizontally thereon, a carriage on the track, gearingmounted in the carriage, a cutter driven by the gearing, a pulleymounted on the jib and having a square axial perforation larger at theends than in the middle, in combination with a square gearshaft workingin the perforation.

10. A routing machine, comprising a work table, a jib pivoted to swinghorizontally over the table, a track pivoted to swing both verticallyand horizontally on the jib, a carriage movable on the track, gearingmounted in the carriage, a cutter driven by the gearing, a pulleymounted on the jib and having a square axial perforation larger at theend than in the middle, in combination with a square gearshaft workingin the perforation.

11. A routing machine, comprising a work table, a laterally swinging jibpivoted to the table, a laterally swinging track pivoted to the jib, acarriage on the track, gearing mounted in the carriage, a cutterheadrevoluble on a horizontal axis and driven by the gearing, a pulleymounted on the jib, and a driving connection between the pulley and thegearing.

12. A routing machine comprising a work table, a jib pivoted to swinghorizontally thereon, means for fastening the jib in different angularpositions on the table, a track pivoted to oscillate horizontally on thejib, means for fastening'the track in different angular positions on thejib, a carriage movable on the track, a pulley mounted on the track,gearing mounted in the carriage, means for raising and lowering thegearing in the carriage, a driving connection between the pulley and thegearing, and a cutter driven by the gearing.

13. A routing machine, comprising a work table, a jib pivoted to swinghorizontally over the table, and provided with a clamp for engaging thesame, a track pivoted to swing horizontally on the jib, and providedwith a clamp for engaging the same, a carriage moving on the track, apulley mounted on the track, gearing mounted in the carriage, a drivingconnection between the gearing and the pulley, and a cutter driven bythe gearing.

14:. A machine of the specified class, comprising a work table, a jibpivoted to swing horizontally over the table, a track pivoted tooscillate horizontally on the jib, a carriage movable on the track, arotary cutter traveling with the carriage, and means for driving thecutter, in combination with visible guides carried by the pivoted jiband registering with different paths of the cutter in the work indifferent pivotal positions of the track relative to the jib.

In testimony whereof I hereunto set my name in the presence of twowitnesses.

ALFRED G. OSMER.

Witnesses:

WILLARD EDDY, EVA OAYLEY.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents. Washington, D. 0.

